Sans Digital TowerRAID TR2UT-B 2 Bay SATA to USB 2.0/eSATA JBOD/Spanning /RAID 0/ RAID 1 Enclosure Accessestwo hard drives using only one cable. Host Interfaces: USB 2.0 and eSATA. Supports four different RAID modes, including FAST (RAID 0), SAFE (RAID 1), JBOD (individual drive access) and BIG (spanning). Drive Interface: 4 x 3.5" SATA I / SATA II hard drive. Support latest 2TB Hard Drive in each bay. Up to 4TB in max. storage capacity. Support Windows 2000, XP, Vista, and Windows Server 2003, MAC and Linux.